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Dividends Declared and Paid - Additional Information (Details) - $ / shares
 3 Months Ended 12 Months Ended
Dec. 29, 2017
Nov. 30, 2017
Oct. 31, 2017
Sep. 29, 2017
Aug. 31, 2017
Jul. 31, 2017
Jun. 30, 2017
May 26, 2017
Apr. 28, 2017
Mar. 31, 2017
Feb. 28, 2017
Jan. 31, 2017
Dec. 30, 2016
Nov. 30, 2016
Oct. 31, 2016
Sep. 30, 2016
Aug. 31, 2016
Jul. 29, 2016
Jun. 30, 2016
May 31, 2016
Apr. 29, 2016
Mar. 31, 2016
Feb. 29, 2016
Jan. 29, 2016
Jan. 15, 2016
Dec. 31, 2015
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Equity [Abstract]                                                                        
Total regular dividends declared (in dollars per shares)                                                                     $ 1.32  
Regular Long-term incentive plan (LTIP) units, distributions per unit (in dollars per share)                                                                     $ 1.32  
Percentage of distribution considered taxable income                                                                     94.70% 90.00%
Percentage of 1250 unrecaptured gain                                                                     5.30%  
Percentage of distribution considered capital gain                                                                       10.00%
Common shares, dividend declared per share (in dollars per share) $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.11 $ 0.10 $ 0.10 $ 0.08 $ 0.08 $ 0.33 $ 0.33 $ 0.33 $ 0.33 $ 0.33 $ 0.33 $ 0.33 $ 0.39 $ 1.32 $ 1.38